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What are the important features of hadoop?
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What are the main components of hadoop?
Explain Data Locality in Hadoop?
Compare Hadoop and RDBMS?
How would you check whether your NameNode is working or not?
What daemons run on master nodes?
What are the different modes in which we can configure/install Hadoop?
What is the problem with small files in Hadoop?
After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?
Explain how can you check whether namenode is working beside using the jps command?
What does the high availability of a name-node means?
What is tasktracker in hadoop?
What is difference between reducer and combiner?
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